MP20041 MPS | Alldatasheet
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Dual, Ultra Low Noise, High PSRR 300mA Linear Regulator MP20041 Rev. 1.0 www.MonolithicPower.com 1 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. The Future of Analog IC Technology
DESCRIPTION
The MP20041 is a dual-channel, micropower, ultra low noise, low dropout and high PSRR linear regulator. The output voltage of MP20041 ranges from 1.2V to 3.6V in 100mV increments and 1% accuracy by operating from a +2.5V to +6.0V input. The MP20041 can supply up to 300mA of load current at each channel. The MP20041 uses an internal PMOS as the pass element, which consumes 114 μA supply current (both LDOs on) at no load condition. The EN1 and EN2 pins control each output respectively. When both channels shutdown simultaneously, the chip will be turned off and consume nearly zero operation current which is suitable for battery-power devices. The MP20041 features current limit and over temperature protection. It is available in a 2mm x 2mm TQFN8 package.
FEATURES
- Wide Operating Voltage Ranges: 2.5V to 6V
- Two LDOs in a 2mmx2mm TQFN8 Package
- Up to 300mA Output Current (Per Channel)
- Dual Enable Pins Control Each Output
- 72dB PSRR at 10kHz
- 11 μVRMS Ultra Low Noise Output with No Noise Bypass Capacitor Required
- 73mV Dropout at 100mA Load
- Very Fast Line/Load Transient Responses with Small Input/Output Capacitor
- Current Limit and Thermal Protection
APPLICATIONS
- Cellular Phones
- Battery-powered Equipment
- Laptop, Notebook, and Palmtop Computers
- Hand-held Equipment
- Wireless LAN All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION GND IN EN2 EN1 OUT2 CIN COUT1 COUT2 MP20041 OUT1 EN2 EN1 IN OUT2 OUT1
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 2 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. ORDERING INFORMATION* Part Number V OUT1 VOUT2 Package Free Air Temperature (T A) Top Marking MP20041DGT-GJ-LF-Z 1.8V 2.5V 5H MP20041DGT-MG-LF-Z 2.8V 1.8V 7K MP20041DGT-SS-LF-Z 3.3V 3.3V 9P MP20041DGT-SL-LF-Z 3.3V 2.7V 8P MP20041DGT-MS-LF-Z 2.8V 3.3V 7P MP20041DGT-PP-LF-Z 3.0V 3.0V 6P MP20041DGT-JS-LF-Z 2.5V 3.3V 7S MP20041DGT-GS-LF-Z 1.8V 3.3V 6S MP20041DGT-GB-LF-Z 1.8V 1.3V 8U MP20041DGT-GC-LF-Z 1.8V 1.2V TQFN8 (2mmx2mm) -40°C to +85°C * Other output voltage versions between 1.2V and 3.3V are available in 100mV increments. Contact factory for availability. ORDERING GUIDE For RoHS Compliant Packaging, add suffix - LF (e.g. MP20041DGT- -LF); For Tape and Reel, add suffix -Z (e.g. MP20041DGT- - LF-Z). OUTPUT VOLTAGE SELECTOR GUIDE* Code V OUT Code V OUT C 1.2 T 2.65 B 1.3 L 2.7 F 1.5 M 2.8 W 1.6 N 2.85 G 1.8 V 2.9 D 1.85 P 3.0 Y 1.9 Q 3.1 H 2.0 X 3.15 E 2.1 R 3.2 J 2.5 S 3.3 K 2.6 Z 5.0 * Code in Bold are standard versions. For other output voltages between 1.2V and 5.0V contact factory for availability. Minimum order quantity on non-standard versions is 25,000 units.
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 3 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. PACKAGE REFERENCE IN EN1 EN2 NC OUT1 OUT2 NC GND TOP VIEW ABSOLUTE MAXIMUM RATINGS (1) Continuous Power Dissipation (TA = +25°C) (2) Operation Temperature Range ... -40°C to 85°C Recommended Operating Conditions (3) Thermal Resistance (4) θJA θJC Notes: 1) Exceeding these ratings may cause permanent damage to the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature T J(MAX), the junction-to- ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD(MAX)=(TJ(MAX)- TA)/ θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside its operating conditions. 4) Measured on JESD51-7 4-layer board.
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 4 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN=3.5V, VOUT1=1.8V, VOUT2=2.5V, CIN=COUT1=COUT2=1uF, EN1=EN2=VIN, Typical Value at TA=25°C for each LDO unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Input Voltage VIN V IN=2.5V to 6.0V 2.5 6 V Output Voltage Range VOUT 1.2 3.6 V Load regulation(5) ΔVOUT I LOAD = 1mA to 300mA -35 -10 5 mV Line Regulation(6) ∆VLINE VIN =(VOUT+0.3V or 2.5V) to 6V, IOUT=1mA 0.05 %/V Maximum Output Current I MAX Continuous 300 mA Current Limit I LIM Short circuit current limit 525 mA Quiescent Current I G No Load 114 uA VOUT1=1.8V, IOUT1 = 100mA 75 mV VDROP1 VOUT1=1.8V, IOUT1 = 300mA 220 mV VOUT2=2.5V, IOUT2 = 100mA 60 mV Dropout Voltage (7) VDROP2 VOUT2=2.5V, IOUT2 = 300mA 180 mV EN Input High Threshold V IH V IN = 2.5V to 6.0V 1.6 V EN Input Low Threshold V IL V IN = 2.5V to 6.0V 0.45 V EN Input Bias Current I SD EN = GND or V IN 300 nA Shutdown Supply Current I GSD EN1 = EN2 = GND 0.03 1 uA Thermal Shutdown Temperature T SD 140 °C Thermal Shutdown Hysteresis ΔTSD 10 °C 100Hz to 100kHz, COUT=1μF, ILOAD=10mA 11 μVRMS Output Voltage Noise 100Hz to 100kHz, COUT=1μF, ILOAD=100mA 11 μVRMS f=100Hz 68 dB f=1kHz 66 dB ILoad=10mA f=10kHz 65 dB f=100Hz 69 dB f=1kHz 65 dB Output Voltage AC PSRR PSRR ILoad=150mA f=10kHz 72 dB Notes: 5) Load Regulation= OUT(MAX) OUT(MIN)O U TI O U TI OUT NOM VV 100(%)V 6) Line Regulation= IN(MAX ) IN(MIN)OUT V OUT V IN(MIN) OUT(NOM)IN MAX VV 100(% / V) VV V 7) Dropout Voltage is defined as the input to output different ial when the output voltage drops 100mV below its nominal value.
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 5 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. PIN FUNCTIONS Pin # Name Description 1 IN Supply Input Pin. 2 EN1 Channel 1 Enable (Active High). Do Not Float This Pin. 3 EN2 Channel 2 Enable (Active High). Do Not Float This Pin. 4, 6 NC 5 GND Common Ground. 7 OUT2 Channel 2 Output Voltage. 8 OUT1 Channel 1 Output Voltage.
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 6 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS VIN=3.5V, VOUT1=1.8V, VOUT2=2.5V, IOUT1=IOUT2=0mA, CIN=COUT1=COUT2=1uF, EN1=EN2=VIN, Typical Value at TA = 25°C for Both Channel Enabled. 10 10 2 103 104 105 106102 103 104 105 106 100 120 PSRR(dB) FREQUENCY(Hz)FREQUENCY(Hz) 120 150 180 2.5 3 3.5 4 4.5 5 5.5 6 I LOAD=50mA ILOAD=100mA ILOAD=10mA VEN 2V/div VOUT 1V/div EN Start Up Waveform VIN=3.5V, IOUT1=IOUT2=50mA 10us/div Power Supply Rejection Ratio vs. Frequency Channel-to-Channel Isolation vs. Frequency Quiescent Current vs. Supply Voltage QUIESCENT CURRENT (uA)CHANNEL ISOLATION (dB) VIN(V) VOUT2 VOUT1 -0.25 -0.20 -0.15 -0.10 -0.05 0.05 0.10 0.15 0.20 0.25 -50 -30 -10 10 30 50 70 90 -0.25 -0.20 -0.15 -0.10 -0.05 0.05 0.10 0.15 0.20 0.25 -50 -30 -10 10 30 50 70 90 Out1 Voltage Accuracy vs. Temperature Out2 Voltage Accuracy vs. Temperature OUT VOLTAGE ACCURACY (%) IO=300mA IO=0mA IO=300mA IO=0mA OUT VOLTAGE ACCURACY (%) Dropout Voltage vs. Temperature Quiescent Current vs. Temperature QUIESCENT CURRENT (uA) DROPOUT VOLTAGE (mV)0 100 120 140 160 180 200 -50 -30 -10 10 30 50 70 90 100 150 200 250 300 -50 -30 -10 10 30 50 70 90 VOUT2 dropout VOUT1 dropout Out Voltage Accuracy vs. Output Current OUT VOLTAGE ACCURACY (%) OUTPUT CURRENT(mA)
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 7 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN=3.5V, VOUT1=1.8V, VOUT2=2.5V, IOUT1=IOUT2=0mA, CIN=COUT1=COUT2=1uF, EN1=EN2=VIN, Typical Value at TA = 25°C for Both Channel Enabled. 200us/div 200us/div Load Transient Response ILOAD=10 to 50mA, with Resistor Load Load Transient Response ILOAD=10 to 200mA, with Resistor Load Load Transient Response ILOAD=10 to 300mA, with Resistor Load Load Transient Response ILOAD=10 to 100mA, with Resistor Load 100us/div 200us/div 200us/div VOUT2 10mV/div VOUT1 10mV/div ILOAD 20mA/div VOUT2 50mV/div VOUT1 50mV/div ILOAD 100mA/div VOUT2 50mV/div VOUT1 50mV/div ILOAD 200mA/div VOUT2 20mV/div VOUT1 20mV/div ILOAD 50mA/div VOUT1 10mV/div VOUT2 10mV/div VIN 1V/div VOUT1 10mV/div VOUT2 10mV/div VIN 1V/div VOUT1 10mV/div VOUT2 10mV/div VIN 1V/div VOUT1 10mV/div VOUT2 10mV/div VIN 1V/div Line Transient Response VIN=3V to 4V, ILOAD=1mA Line Transient Response VIN=3V to 4V, ILOAD=100mA Line Transient Response VIN=3V to 4V, ILOAD=10mA Line Transient Response VIN=3V to 4V, ILOAD=50mA 100us/div 100us/div 100us/div VEN 2V/div VOUT 1V/div 40us/div EN Shut Down Waveform VIN=3.5V, IOUT1=IOUT2=50mA VOUT2 VOUT1
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 8 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. BLOCK DIAGRAM Figure1—Function Block Diagram OPERATION The MP20041 integrates two low noise, low dropout, low quiescent current and high PSRR linear regulators. It is intended for use in devices that require very low voltage, low quiescent current power such as wireless LAN, battery- powered equipment and hand-held equipment. The MP20041 uses internal PMOSs as the pass elements and features internal thermal shutdown and internal current limit circuits. Dropout Voltage Dropout voltage is the minimum input to output differential voltage required for the regulator to maintain an output voltage within 100mV of its nominal value. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage of MP20041 is very low. Shutdown The MP20041 can be switched ON or OFF by a logic input at the EN pin. A high voltage at this pin will turn the device on. When the EN pin is low, the regulator output is off. The EN pin should be tied to VIN to keep the regulator output always on if the application does not require the shutdown feature. Do not float the EN pin. Current Limit The MP20041 includes two independent current limit structures which monitor and control each PMOS’s gate voltage limiting the guaranteed maximum output current to 300mA. Thermal Protection Thermal protection turns off the PMOS when the junction temperature exceeds +140ºC, allowing the IC to cool. When the IC’s junction temperature drops by 10ºC, the PMOS will be turned on again. Thermal protection limits total power dissipation in the MP20041. For reliable operation, junction temperature should be limited to 125 ºC maximum. Load-Transient Considerations The output response of load-transient consists of a DC shift and transient response. Because of the excellent load regulation of MP20041, the DC shift is very small. The output voltage transient depends on the output capacitor’s value and the ESR. Increasing the capacitance and decreasing the ESR will improve the transient response. Typical output voltage transient spike of MP20041 for a step change in the load current from 10mA to 100mA is tens mV.
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR MP20041 Rev. 1.0 www.MonolithicPower.com 10 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. PCB layout guide PCB layout is very important to achieve good regulation, ripple rejection, transient response and thermal performance. It is highly recommended to duplicate EVB layout for optimum performance. If change is necessary, please follow these guidelines and take figure 5 for reference. 1) Input and output bypass ceramic capacitors are suggested to be put close to the IN Pin and OUT Pin respectively. 2) Ensure all feedback connections are short and direct. Place the feedback resistors and compensation components as close to the chip as possible. 3) Connect IN, OUT and especially GND respectively to a large copper area to cool the chip to improve thermal performance and long-term reliability. GND IN R1 R2 EN2 EN1 OUT2 CIN COUT1 COUT2 MP20041 OUT1 EN2 EN1 IN OUT2 OUT1 Top Layer Figure 5—PCB Layout
MP20041-DUAL, ULTRA LOW NOISE, HIGH PSRR, 300mA LINEAR REGULATOR NOTICE: The information in this document is subject to change wi thout notice. Users should warra nt and guarantee that third party Intellectual Property rights are not infringed upon w hen integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP20041 Rev. 1.0 www.MonolithicPower.com 11 1/17/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved.